The photosynthetic pigment that is essential for the process to occur is:

Chlorophyll is a complex molecule. Several modifications of chlorophyll occur among plants and other photosynthetic organisms. All photosynthetic organisms (plants, certain protistans, prochlorobacteria, and cyanobacteria) have chlorophyll a. Accessory pigments absorb energy that chlorophyll a does not absorb.

Chlorophyll is the photosynthetic pigment that is needed. Chlorophyll is the pigment from the Chloroplasts.